The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 21, 2011
Filed:
Jun. 30, 2005
Erik Schlanger, Austin, TX (US);
Nathan Sheeley, Austin, TX (US);
Eric Swartzendruber, Round Rock, TX (US);
Bill Kwan, Austin, TX (US);
Chin-chia Kuo, Austin, TX (US);
Erik Schlanger, Austin, TX (US);
Nathan Sheeley, Austin, TX (US);
Eric Swartzendruber, Round Rock, TX (US);
Bill Kwan, Austin, TX (US);
Chin-Chia Kuo, Austin, TX (US);
Advanced Micro Devices, Inc., Sunnyvale, CA (US);
Abstract
A video processing apparatus and methodology use a combination of a processor and a video decoding hardware block to decode video data by using a reference block cache memory to perform motion compensation decode operations in the video decoding hardware block. To improve the cache hit rate, each memory access for required reference block(s) is used to fetch one or more additional reference blocks which can be used to improve the cache hit rate with future motion compensation operations. Speculative fetch control logic selects the additional reference blocks by using a frequency history table to accumulate compared motion vector information for a current motion compensation block with motion vector information from previously processed motion compensation blocks.